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74AHCT594 Datenblatt(PDF) 6 Page - NXP Semiconductors |
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74AHCT594 Datenblatt(HTML) 6 Page - NXP Semiconductors |
6 / 29 page 74AHC_AHCT594_1 © Koninklijke Philips Electronics N.V. 2006. All rights reserved. Product data sheet Rev. 01 — 4 July 2006 6 of 29 Philips Semiconductors 74AHC594; 74AHCT594 8-bit shift register with output register 7. Functional description [1] H = HIGH voltage level; L = LOW voltage level; ↑ = LOW-to-HIGH transition; X = don’t care. 8. Limiting values [1] The input and output voltage ratings may be exceeded if the input and output current ratings are observed. [2] For SO16 packages: above 70 °C the value of P tot derates linearly with 8 mW/K. For (T)SSOP16 packages: above 60 °C the value of P tot derates linearly with 5.5 mW/K. For DHVQFN16 packages: above 60 °C the value of P tot derates linearly with 4.5 mW/K. Table 3. Function table[1] Function Inputs SHR STR SHCP STCP DS Clear shift register L X X X X Clear storage register X L X X X Load DS into shift register stage 0, advance previous stage data to the next stage H X ↑ X H or L Transfer shift register data to storage register and outputs Qn X H X ↑ X Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions Min Max Unit VCC supply voltage −0.5 +7.0 V VI input voltage −0.5 +7.0 V IIK input clamping current VI < −0.5 V [1] - −20 mA IOK output clamping current VO < −0.5 V or VO > VCC + 0.5 V [1] - ±20 mA IO output current VO = −0.5 V to VCC + 0.5 V - ±25 mA ICC quiescent supply current - 75 mA IGND ground current - −75 mA Tstg storage temperature −65 +150 °C Ptot total power dissipation Tamb = −40 °C to +125 °C [2] - 500 mW |
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